There are still things that are on our internal "To Do" list that need to be tackled before v7.6.0 can be released; but we keep a fairly up to date set of
Progress Reports and
Developer Notes. The reason that it's taking so long is because we're doing a pretty major rewrite of the entire Control Panel as well as the public portions of the main forum coding (converting the xHTML to HTML5 and making it all mobile).